フェンスの線形フィート計算ツール
すべての直線区間、門の幅、斜面の長さを1つの合計線形フィートにまとめ、資材の手計算に備えます。
Fence Calculator
仕様を入力してください。結果はリアルタイムに更新され、式も表示されます。
概要
フェンスの材料は線形フィートで買い、線形フィートで数えます。すなわち、宅地の一番目からもう一番目までの、フェンスのすべての直線区間を足したものです。この計算ツールは各直線区間と門の幅を入力させ、区間を合計して門の開口部を差し引きます。資材の手計算に必要なのはまさにこの数字です。
線形フィートの測量はテープメジャーの仕事です。延性が長ければ地図のツールでも構いません。手計算の正確さは、庭の周囲をなぞる線の正確さ次第です。
前提条件
- The total is the plain sum of every straight segment entered.
- Gate widths are subtracted from the linear total when entered.
- Sloped runs use the slope-adjusted length from the fence slope calculator, not the horizontal distance.
よくある間違い
- L字型や曲線の地界を1つの区間として数えること。すべての直線部分がそれぞれ別の線で、それぞれ測る必要があります。
- 門の幅を合計に残すこと。パネルで埋めない開口部分も含めてフェンスを余分に買うことになります。
- 面積の癖で考えること。フェンスは長さ単位の材料で、重要なのは延線の輪郭だけです。
フェンス計算の式
計算機が走らせる同じ数式を、平たく。ブラックボックスはありません。
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スパン数
sections = max(ceil(effective run / post spacing), 1)
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柱数
posts = (sections + 1) along the run, minus named corner and end posts already placed, plus 2 gate posts per gate
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有効延長
effective run = total length - sum of gate widths
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横木数
total rails = sections x rails per section
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ピケット数
pickets = ceil(run in inches / (picket width + gap)); total = ceil(raw x (1 + waste %))
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Board-on-Boardのピッチ
pitch = picket width - 1 inch overlap
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パネル数
full panels = floor(run / panel width); add 1 cut panel if the remainder is over 0.01 ft; total = ceil(raw x (1 + waste %))
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コンクリート量
per-hole = pi x (diameter / 2)^2 x depth; total = per-hole x posts; bags = ceil(total / bag yield)
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勾配調整長
slope run = effective run / cos(atan(slope % / 100)); shown alongside, counts use the flat run
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費用
materials = (posts x post price + rails x rail price + infill x unit price + 60 lb bags x bag price) x regional multiplier; labor = effective run x labor per ft x terrain multiplier x regional multiplier; installed total = materials + gate hardware + removal + permit + labor
計算機が示す数字はすべて、これらの式にあなたの入力を当てた結果です。
次のステップ
関連する計算ツール
関連する読み物
詳細なガイド
購入ガイド
A linear feet of fence calculator exists because every material list in fencing starts from one number, the run of the line, not the area it encloses. Posts, rails, pickets, panels and hardware are all counted off that single footage, before height or style ever enters the picture. The arithmetic is additive rather than geometric: walk the property line, note where it turns a corner, and add each straight stretch to the next. A yard with four corners has four segments to measure and sum, and a yard with a jog around a shed or a dogleg along a creek just has more of them, each one still measured and added the same way regardless of how many turns the boundary makes. There is no shortcut that skips measuring each straight run, because a diagonal or curved boundary is longer than the straight-line distance between its endpoints would suggest, and guessing at it tends to under-order material, which on a delivered pallet of panels or a bundled picket order is a slower and more expensive fix than measuring carefully the first time. Once the segments are added, any gate openings come out of the total, since a gate is a measured, framed opening rather than a run of panel or picket, and material should not be bought to fill a hole that a gate will occupy.
Measuring is a tape-and-stakes job for a small yard, and a satellite map with a measuring tool for a long or irregular boundary where walking every foot with a tape is impractical. Either way the segments get entered the same way: one number per straight run. A graded yard adds a wrinkle, because a fence that follows a slope is physically longer than the horizontal distance the tape reads on a flat map. The fence slope calculator converts a horizontal run and a grade percentage into the actual built length, and that adjusted figure, not the flat-ground number, is what belongs in the linear feet total for a sloped section. The guide on how to measure your yard for a fence walks through the full process, including where to start the tape at a property corner and how to handle an irregular lot line without a survey.
Linear feet is also where a wood take-off starts once the run is known. The guide on how many posts for a fence walks the run into post count once a spacing is chosen, and from there the fence rail calculator turns the same footage, now split into post-to-post sections, into a rail count by height and style. None of that math works without the linear total being right first, which is why this calculator is usually the first stop before the wood, picket or panel calculators that follow it, and why rounding it loosely tends to compound: a yard measured a few feet short shows up as a short rail order downstream. Pricing follows the same chain. The fence cost calculator takes a linear foot total and a cost per foot and returns a budget figure, so an accurate linear count upstream is also an accurate budget estimate downstream, while a padded or guessed total turns into a padded or wrong quote.
Linear feet is frequently confused with square feet and with perimeter, and the three measure different things. Square feet multiply length by height and describe an area, relevant for paint or stain coverage, not for how much fence material to buy. Perimeter and linear feet coincide for a simple rectangular lot, which is exactly the case the fence perimeter calculator handles directly from length and width rather than segment by segment, but they diverge once a lot has an irregular boundary, at which point segment-by-segment linear measurement is the correct tool and perimeter formulas understate the real run. A related conversion problem shows up when all that is known is the lot size in acres rather than its shape: the acreage to fence length calculator gives a square-lot estimate from acreage alone, useful for early budgeting before a boundary survey exists, with this calculator as the follow-up once the real sides are measured. For documentation on where the line itself is allowed to sit, the property line and setback guide covers easements and setbacks that affect where a boundary run can be measured from, and the fence materials guide covers how a given linear footage translates into material quantities across wood, vinyl, metal and composite systems. The full set of measurement tools, including the slope, perimeter and acreage calculators referenced above, is collected on the measurement calculators hub. A last practical note: when a run crosses both flat and sloped ground, measure and total each portion separately rather than applying one blanket adjustment to the whole line, since a single average slope figure tends to either overstate the flat stretches or understate the graded ones, and the segment-by-segment habit this calculator already asks for makes that split straightforward rather than an extra step.
よくある質問
フェンスの線形フィートはどのように計算しますか。
フェンスのすべての直線区間をフィートで測って足し、合計から門の開口部を差し引きます。この合計が、資材計算ツールが支柱、横桟、縦板に分割する線形フィートです。
線形フィートの計算式は何ですか。
地界上のすべての直線区間の長さを足し合わせ(L1 + L2 + L3 のように)、開けておく門の総幅を引きます。結果がフェンス延線の線形フィートです。
庭全体を歩かずにフェンスのラインを測るにはどうしますか。
短い区間はガラスファイバーのテープで各直線区間を測り、長くて不規則な地界なら、測距機能のある地図や衛星画像のツールを使って、計算ツールの指示どおりに各区間の測定値を加算します。
フェンスの高さは線形フィートに影響しますか。
いいえ。線形フィートは高さとは独立です。高さはその長さを覆う板やパネルの枚数と費用を変えるだけで、それは木製とパネルの計算ツールが高さとスタイルから取り込みます。
線形フィートは平方フィートと同じですか。
違います。平方フィートは塗り、染色、全面に板を張る内張りなどの面積なので、長さx高さで求めます。線形フィートは地面に沿った延長だけを数えます。100フィートx6フィートのフェンスは面積で600平方フィートですが、延長は100線形フィートです。
曲がったフェンスでは線形フィートは増えますか。
範囲内なら増えます。建てられる線はそれをまっすぐつなぐ弦より長く、急な斜面も実際の長さを加えます。斜面の補正は一律の割増しではなく三角関数です。水平100フィートの延長が25パーセントの勾配なら約103フィートになります。斜面計算ツールが、どの延長と勾配の組でもこの値を返します。
住宅の壁の分は合計から差し引いたほうがよいですか。
通常は差し引きます。フェンスが住宅や別の建物に戻る場所では壁にはパネルが要らないので、住宅の幅いっぱいの隙間を線形の合計に含めるべきではありません。測るときは支柱と支柱の間の地面だけを測ってください。
測量はどのくらい正確である必要がありますか。
材料は1フィート単位で購入するので、1フィート程度で測り、ロス率は計算ツールが最後に加算します。手計算を1パネル分だけ多めにするのは避け、各区間に余裕を足して延長を二重に覆うよりも、そのほうがよいです。